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C++程序设计语言(第4部分:标准库)(原书第4版)
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C++程序设计语言(第4部分:标准库)(原书第4版)

by 本贾尼 斯特劳斯特鲁普
August 2021
Intermediate to advanced
450 pages
6h 57m
Chinese
Pearson
Content preview from C++程序设计语言(第4部分:标准库)(原书第4版)

44.2 C++11扩展

这里首先列出C++11标准增加的语言特性和标准库组件。接下来将讨论应对旧版本(特别是C++98)的方法。

44.2.1 语言特性

研究语言特性列表着实让人眼花缭乱。但要记住,语言特性并不是孤立使用的。特别是,大多数C++11新特性如果脱离了其他特性构成的框架就毫无意义。下面特性列表的顺序大致就是这些特性在本书中第一次出现的顺序:

[1]使用{}列表进行一致且通用的初始化(2.2.2节,6.3.5节);

[2]从初始化器进行类型推断:auto(2.2.2节,6.3.6.1节);

[3]避免窄化转换(2.2.2节,6.3.5节);

[4]推广的且有保证的常量表达式:constexpr(2.2.3节,10.4节,12.1.6节);

[5]范围for语句(2.2.5节,9.5.1节);

[6]空指针关键字:nullptr(2.2.5节,7.2.2节);

[7]限域且强类型的枚举:enum class(2.3.3节,8.4.1节);

[8]编译时断言:static_assert(2.4.3.3节,24.4节);

[9]{}列表到std::initializer_list的语言映射(3.2.1.3节,17.3.4节);

[10]右值引用(允许移动语义;3.3.2节,7.7.2节);

[11]以>>结束的嵌套模板参数(两个>间无空格,3.4.1节);

[12]l ambda(3.4.3节,11.4节);

[13]可变参数模板(3.4.4节,28.6节);

[14]类型和模板别名(3.4.5节,6.5节,23.6节);

[15]Unicode字符(6.2.3.2节,7.3.2.2节);

[16]long long整数类型(6.2.4节);

[17]对齐控制:alignas和alignof(6.2.9节); ...

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Publisher Resources

ISBN: 9787111544395